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Finding the Fourth Proportional to 15,671.62, 21,626.14 and 8,597.90

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Solution

The fourth proportional to 15,671.62, 21,626.14 and 8,597.90 is: 11,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.62 : 21,626.14 = 8,597.90 : x
  2. Step 2: Convert to fraction form
    15,671.62/21,626.14 = 8,597.90/x
  3. Step 3: Cross multiply
    15,671.62x = 21,626.14 × 8,597.90
  4. Step 4: Simplify right side
    15,671.62x = 185,939,389.11
  5. Step 5: Solve for x
    x = 185,939,389.11/15,671.62
  6. Step 6: Final answer
    x = 11,864.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.